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use crate::{encode_section, ConstExpr, Encode, Section, SectionId, ValType};
#[derive(Clone, Default, Debug)]
pub struct GlobalSection {
bytes: Vec<u8>,
num_added: u32,
}
impl GlobalSection {
pub fn new() -> Self {
Self::default()
}
pub fn len(&self) -> u32 {
self.num_added
}
pub fn is_empty(&self) -> bool {
self.num_added == 0
}
pub fn global(&mut self, global_type: GlobalType, init_expr: &ConstExpr) -> &mut Self {
global_type.encode(&mut self.bytes);
init_expr.encode(&mut self.bytes);
self.num_added += 1;
self
}
pub fn raw(&mut self, data: &[u8]) -> &mut Self {
self.bytes.extend(data);
self.num_added += 1;
self
}
}
impl Encode for GlobalSection {
fn encode(&self, sink: &mut Vec<u8>) {
encode_section(sink, self.num_added, &self.bytes);
}
}
impl Section for GlobalSection {
fn id(&self) -> u8 {
SectionId::Global.into()
}
}
#[derive(Clone, Copy, Debug, Eq, PartialEq, Hash)]
pub struct GlobalType {
pub val_type: ValType,
pub mutable: bool,
}
impl Encode for GlobalType {
fn encode(&self, sink: &mut Vec<u8>) {
self.val_type.encode(sink);
sink.push(self.mutable as u8);
}
}